Home / 141,969.26-195,916.78-78,306.90

Finding the Fourth Proportional to 141,969.26, 195,916.78 and 78,306.90

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Solution

The fourth proportional to 141,969.26, 195,916.78 and 78,306.90 is: 108,063.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,969.26 : 195,916.78 = 78,306.90 : x
  2. Step 2: Convert to fraction form
    141,969.26/195,916.78 = 78,306.90/x
  3. Step 3: Cross multiply
    141,969.26x = 195,916.78 × 78,306.90
  4. Step 4: Simplify right side
    141,969.26x = 15,341,635,699.78
  5. Step 5: Solve for x
    x = 15,341,635,699.78/141,969.26
  6. Step 6: Final answer
    x = 108,063.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.